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46 lines
1.7 KiB
C#
46 lines
1.7 KiB
C#
using System;
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namespace MapControl.Projections
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{
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/// <summary>
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/// ETRS89 UTM Projection with zone number.
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/// </summary>
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public class Etrs89UtmProjection : GeoApiProjection
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{
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public const int FirstZone = 28;
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public const int LastZone = 38;
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public const int FirstZoneEpsgCode = 25800 + FirstZone;
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public const int LastZoneEpsgCode = 25800 + LastZone;
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public int Zone { get; }
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public Etrs89UtmProjection(int zone)
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{
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if (zone < FirstZone || zone > LastZone)
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{
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throw new ArgumentException($"Invalid ETRS89 UTM zone {zone}.", nameof(zone));
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}
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Zone = zone;
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CoordinateSystemWkt
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= $"PROJCS[\"ETRS89 / UTM zone {zone}N\","
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+ "GEOGCS[\"ETRS89\","
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+ "DATUM[\"European_Terrestrial_Reference_System_1989\","
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+ "SPHEROID[\"GRS 1980\",6378137,298.257222101]],"
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+ "PRIMEM[\"Greenwich\",0,AUTHORITY[\"EPSG\",\"8901\"]],"
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+ "UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],"
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+ "AUTHORITY[\"EPSG\",\"4258\"]],"
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+ "PROJECTION[\"Transverse_Mercator\"],"
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+ "PARAMETER[\"latitude_of_origin\",0],"
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+ $"PARAMETER[\"central_meridian\",{6 * zone - 183}],"
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+ "PARAMETER[\"scale_factor\",0.9996],"
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+ "PARAMETER[\"false_easting\",500000],"
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+ "PARAMETER[\"false_northing\",0],"
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+ "UNIT[\"metre\",1,AUTHORITY[\"EPSG\",\"9001\"]],"
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+ "AXIS[\"Easting\",EAST],"
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+ "AXIS[\"Northing\",NORTH],"
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+ $"AUTHORITY[\"EPSG\",\"258{zone:00}\"]]";
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}
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}
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}
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